I have been working on OER and HER but I have recently started working on ORR. Could someone provide me literature or handbook for ORR and CV?

I am not sure, using CV and ORR what am I exactly looking for. Like in OER and HER we look for capacitance, overpotential, current density, CV (area for Capacity) but I am not sure for ORR and its CV what am I supposed to find? I have attached the graphs of CV and ORR. Since I am using RRDE-GCE so I am not expected to get Oxidation or Reduction peak or is it possible? What else the CV should provide me and what values will be considered the best? Leads will be appreciated.

Thanks